Gasket embedding an ion sensor

Details Gasket embedding an ion sensor Gasket embedding an ion sensor

2005-08-23

2005-08-23

Peavey, Enoch E (Department: 3676)

Seal for a joint or juncture

Seal between fixed parts or static contact against...

Contact seal between parts of internal combustion engine

C277S594000, C277S317000

Reexamination Certificate

active

06932352

ABSTRACT:
A gasket embedding an ion sensor5used for sealing a cylinder head to a cylinder block of an engine which is intervened under pressure between the cylinder head and the cylinder block, the gasket having a detection function of the condition in a combustion chamber. The gasket comprises a metal sheet in which a bore seal is formed at a ring-like bead structure and of an insulation seal layer coating at least the upper surface and the lower surface of the metal sheet so as to include the bead structure. An ionic current detection electrode is formed so as to project into the combustion chamber from the insulation seal layer and further a lug projecting outside from the periphery of the insulation seal layer is served as an ionic current introduction electrode of the sensor.

REFERENCES:
patent: 4947680 (1990-08-01), McDougal
patent: 5659132 (1997-08-01), Novak et al.
patent: 2002/0130468 (2002-09-01), Kawai et al.

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